Patents by Inventor Pierre Bourrat

Pierre Bourrat has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Numerically controlled machine tool
    Patent number: 4027245
    Abstract: In a numerically controlled machine tool, for example a grinder, a workpiece to be machined is rotated and is displaced parallel to its axis of rotation and coders provide signals corresponding to the workpiece rotation and the workpiece displacement. The workpiece is supported on a cradle mounted for pivotal motion to move the workpiece towards and away from the tool, the movement being controlled by a servo connected to a computer which receives the signals from the coders and stores data defining the required workpiece shape.
    Type: Grant
    Filed: April 8, 1975
    Date of Patent: May 31, 1977
    Assignee: Regie Nationale des Usines Renault
    Inventors: Pierre Bourrat, Paul Xavier Gosset, Pierre Riss, Jean-Pierre Vignaud